Era
20th century
5
1945-
4
1917-
3
Civil War, 1936-1939
3
1818-1883
2
1877-1964
2
1900-1999
2
1929
2
1936-1939
2
1945-1992
2
1948
2
1948 (Coup d'État)
2
Coup d'état, 1948
2
Since 1917
2
1798-1874
1
1814-1876
1
1820-1895
1
1825-1864
1
1850-1937
1
1869-1940
1
1870-1924
1
1878-1965
1
1879-1940
1
1908-1957
1
1917-1921
1
1956
1
Revolution, 1917-1921
1
Revolution, 1956
1
Russian occupation, 1940-1941
1
Since 1945
1